| The traditional way for hybridization is mainly through the surface modification on inorganic nano-particles by using silane coupling agent, the surface of inorganic nano-particles which is modified by silane coupling agent is changed from hydrophilicity to lipophilicity, making it easier for inorganic nano-particles dispersed in organic polymer matrix, and intertwined with the organic phase through the organic structure in silane coupling agent, then achieved the target the inorganic nano-particles are dispersed homogeneously in the organic phase. But the nano-particles which is modified by silane coupling agent don't react with the organic phase, and let the modified nano-particles detached from coating. The hardness of organic polymer matrix film is not very good in organic phase.This article prepared the nano-SiO2/silicone hybrid material by using in-situ formation, making nano-SiO2 to form hydrogen bonds to form silicone resin interpenetrating network structure. The inorganic/organic interpenetrating network make a strong compatibilization for inorganic phase in the organic phase. And the inorganic phase can be dispersed homogeneously in the organic phase. First, the TEOS should fully dissolved in silicone resin, and use the hydrolysis of Sol-Gel method to prepare silicone resin nano-SiO2 inorganic network, the toughness, abrasion resistance, temperature endurance and hardness of coating film are enhanced by the addition of nano-SiO2 inorganic network. This paper use TEOS, silicone resin and 25% of the ammonia as the main raw material to synthetize a novel nano-SiO2/ silicone hybrid materials in situ . hybrid materials with epoxy acrylic resin and acrylic aliphatic polyurethane resin mixed with inorganic/organic hybrid coatings, and inorganic/organic hybrid coatings for thermal stability and mechanical properties were tested . The main contents include:(1) Exploration and research of nano-SiO2/silicone hybrid materials ,use the hydrolysis of TEOS sol-gel method nano-SiO2/silicone hybrid materials prepared by in situ route, and the functional groups of products were characterized by IR,the results show that IR spectrum appeared at 3430cm-1 and 1645cm-1 near the peak of the hydrogen bond is Si-OH peak association.That shows nano-SiO2 in the silicone resin is existed by hydrogen bonds, and this indirectly proved that nano-SiO2/silicone interpenetrating network structure. Further optimize the reaction conditions, to determine the hydrolysis temperature control experiment in between 20℃30℃, with N, N-dimethyl formamide solution as the solvent, the product performance is very stable, still did not occur a month or crosslinked gel phenomenon.(2) Study on the performance of hybrid materials which is made by silicone resin and nano-silica hybrids in different proportion, and determine the best hybrid nano-silica ratio of silicone resin is 35%.The hybrid materials were characterized by IR,SEM,TG and other means of detection,and infer the advantages of hybrid materials from the chemical structure and microstructure.(3) The adhesion of the coating,hardness,wear resistance,heat resistance and impact resistance of hybrid materials, determined the best addition of hybrid material in the composite coating system is 16%, wear-resisting performance reach the best quality loss 3.3mg, hardness is 6H, adhesion is in one grade, impact resistance is 50Kg·cm. Explain the reason for improving the coating adhesion,hardness,wear resistance,heat resistance from the chemical bond and microstructure characteristics of the hybrid materials.
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